Robyn Comley, 19, and her 2-and-half-year-old niece, Teegan Greer, walk along the beach in Biloxi, Miss., on Saturday. Tropical Storm Karen, weakened overnight Saturday. For the most part, it was business as usual on the Mississippi Gulf Coast.

New Orleans — After days of lumbering toward the Gulf Coast, the storm system Karen dissipated late Sunday morning as storm preparations in the region were called off or scaled back.

The remnants of the storm still had the potential to unleash heavy rains on low-lying areas. But southeastern Louisiana parishes lifted evacuation orders, and Plaquemines Parish closed a shelter where more than 80 people had taken refuge Saturday.

The National Hurricane Center in Miami said the remnants of Karen were moving eastward off the coast at about 13 mph. Forecasters expected what remains of Karen — which had been a tropical storm, then a depression — to continue moving generally east over the next day to two days. Maximum sustained winds remained near 30 mph, with higher gusts, and forecasters said localized coastal flooding could still occur along portions of the coast. Rain accumulations of 1 to 3 inches were expected.

Even as residents breathed a sigh of relief, forecasters and emergency officials warned them to keep an eye on developments.

Wind and waves uncovered tar balls on the beaches of Grand Isle, Louisiana, and crews headed out Sunday to check on them, Mayor David Camardelle Jr. said. He said he was sure they were from the 2010 Gulf oil spill.

In Lafitte, Louisiana, Mayor Timothy Kerner said he was relieved the storm lost steam and didn't continue to push up the tide in his flood-prone community. The water lapped at the edge of the main roadway through town in some low-lying areas but stopped short of flooding streets and lawns.